“Make every effort that you do not do injustice. Make every effort to give the rights to those who are entitled to them. Give gifts to one another. Show mercy to one another. Do not slander one another. Do not subjugate one another. Help each other, ignore any wronging between yourselves, and do not expose each other’s faults. Tolerate your wrongdoing to each other. Leave people under the veil of God (mighty and glorified is He). Command what is right and forbid what is wrong, without prying or spying. Denounce any wrongdoing that is apparent but do not concern yourselves with what may be hidden. Do not expose others’ faults so that God (mighty and glorified is He) will not expose yours.”
– Sayyid Muḥyiddīn Abū Muḥammad ‘Abd al-Qādir al-Gilanī al-Ḥasanī wal-Ḥusaynī (d. 1166), Hanbali Sufi master and founder of the Qadiri order.
Taken from Removal of Cares (Jala Al-khawatir)